If you are looking for a twitter client for your Nokia E71 Jakob over at Thusgaard.com recommends twittix
Now, Twittix is a native S60 client for Twitter. It costs about €5 and brings you all the things you’d expect from one of the top two applications in the market: timeline, tweeting, replying, direct messages, My Tweets, people you follow, followers, etc. In my last post on this topic I said that Gravity has set the bar, so naturally we will be comparing Twittix to Gravity. In the following I will focus less on what these two great applications have in common and a lot on what makes them different from eachother.Thusgaard.com 2009, May 2009
You should really check out the entire article over at Jakobs site!